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221
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222Published 1997“...HC 412 .W596...”
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223
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224Published 1998“...HC 681 .W555...”
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225
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226Published 1998“...HF 1642.5 .Z4 .A8 .A0639...”
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227Published 1999“...HT 147 .A2 .C581 1999...”
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228Published 1999“...HF 1583 .Z4 .P16 .G562...”
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229
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230Published 1987“...HB 849.3 .D598 suppl....”
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231Published 1997“...HC 412 .F931...”
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232
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233Published 1997“...HQ 18 .A7 .S623...”
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234Published 1996“...HF 4034 .N934...”
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235Published 1997“...HD 7387.55 .A3 .H765...”
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236Published 1999“...HF 1410.5 .I615...”
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237
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238Published 2000“...HF 1583 .A8324 2000...”
Conference Proceeding Book -
239Published 2000“...HC 460.5 .U58 1999...”
Conference Proceeding Book -
240